Propulsion device for motor-sleds.



REGINALD' J. tonsivmnnrs; OF'FARIBAULT, ivirivivnsotrn..,n 1 i ritor'ursiou nevica roza- Morcia-strips. 'Y

Improvements in Propulsion Devices for MotonSleds, 'of which the following is a specication.'

This invention relatesto. motor Isle'ds, and 1.0 1t particular referenceto a simple and improvedr propulsion device to b e'used in connection therewith. y. A further object of the invention is to produce a propulsion device vadaptablehto 15 -conventional. autornobilel construction and whereby an automobile mounted on runners may be rapidlyand safely propelled. i Y l A further object of the invention is to simplify and improve the construction andl operation of the propulsion device per se.

With these and other ends in view which willreadily appear as the nature of thev in# vention is better understood, thel same con# 1 sists in the improved construction and novel arrangement and combination of parts.'

which will be hereinafter fully described and particularly pointed out in the claim. j

In the accompanying drawing has beenf illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made tothe precise structural details therein exhibited,

but that changes, Valterations andimodificay tions. within thefscope of the claim maybe resortedto when desired.

In the drawingf-f I lliiigure 1 is a plan view of the improved propulsion 'device showing also a pairof runners, parts having been removed for the purpose of exposing subj acent parts.

"Fig, 2- is a longitudinal sectional view taken on the line Q-Z-in'Fig; 1.

Corresponding parts in both figures of th'e drawing are denoted by like charactersv of 5 reference. r

Referring to the drawing, 15 designates =the main driven. shaft or live shaft which receives motion from a suitable source of power through a differential contained 'in a housing 16 and a driving shaft contained in a tubular housing 17, a portion of said driving shaft being seen at 18, The body of the sleigh or wehicle, which is seen in the drawings, is intended to be supported on a cross bar orbeam 19 which in turn is supported on the runners Q0. A leaf spring Q1..

speciiicationof liettersi'atent. Patented Figb.. 2(1), f Vy",@militantefilediliayia'isie. l seriai no. 97,911. I l

onejend of which is connected with the hous';

Y 'The live shaft 'l5-supports two frames, lone of said frames being positioned ateither 4ng 16A has itsotherend connected'with the side ofthe housing 16 between saidl housingrhum and one yof the runnersQO. These frames be'.-

ing of like construction, the description-off one 'will suffice. .Each frame B is composed,

of side members 22 havingy bearingswforI n' front and vrear shafts 23, 24, said shafts vb e-f-y said spur wheelsl being both in mesh wit l spur wheel 27 mounted on the live shaft.

ing located, respectively, to the forward and@ tothe rearward of the live shaft 15. Each .of the shafts 23, 24 carries a pair of wheels-N or drums 25 and, a pinion or spur wheel'QS'- and serving to'drive the shaftsv 23, 24 carryingthe wheels 25. The frame members 22I are provided with forward extensions which are preferably slightly upturned, said eX- tensions being designated by 28; These eX- tensions serve to support an idle shaft 29 carrying a hanged drum or guide/wheel 30. Trained over'the wheels 25 and also over the -flanged wheeler'. drum 30 is an endless belt- 81 v,whichis provided with, earth engaging blocks 32 which. may be of wood, rubber or any other suitable material or combinations of materials, said blocks having beveled edges, between said blocks will not become packed or obstructedvby dirt. It will be seen that the 'forward end portions 'of the belts 31 will Y be .raised above the ground, this ybeing duc partly 'to the fact that the forward extensions 28of the side members 22 are slightly upturned, as shown, andalso partly to the' fact that the flanged guidewheel 3 0 is ofas seen at '33 so that the interspaces a diameter. considerably less than the diameter of the wheels 25.

' lt will be seen from the foregoing description that. the frames Bf are mounted onv the live shaft for pivotal or rocking` movement and thatconsequent-ly those portions of the belts that extend between the lower portions of the wheels 25 will Contact with the Ground. When the live shaft l5 is driven,

ibnotion will be transmitted by the spur wheels 27 to the pinions 26 lon the shafts carrying the 'wheels Q5, ythus driving said wheels and imparting motion to the endless belt', the earth engaging .portion of which will cause the device to travel over the Ground. lVhen the travel is in aforward ha l n direction, as 1s usually the case, the presence of the elevated guide Wheel'sSO will.

assist in enabling the belts -to surinount obstructions of any kind. It is obvious that Within thescope ofthe invention similar guide Wheels lnight be arranged at'the rearward ends of the frames, but this is not usually considered necessary. rl`he blocks with ywhich the belts are shod will assist materially in taking a good hold ,ofthe ground. Sonie of said blocks might, when the devicev is intended to travel over ice, be equipped with spikes or calks7 but as such devices are well known it is not considered necessary to particularly illustrate the saine.

31 are trained and whereb)v said belts are driven are preferably provided'with solid rubber tires, as shoivn at 3'2,` for the purpose of giving proper traction and also to protect the machinery from any sudden shock or jolt. f

The wheels 25 over which the endless belts Having thus described 'the what is claimed as new, isz

t In a deviceotl the class described7 a runner traine includingrunners and a cross bar with which the runners are connected, a live shaft, means for driving the llive shaft including a. differential contained Within a housing and a niain driven shaft, a leaf spring connecting the, housing with the runner frame, rocking frames mounted on the llive shaft between the housing and the runners, wheel carrying shafts supported by the rocking frames, nieans for transmitting motion to the wheel carrying shafts from invention,

- the live shaft, and endless belts trained over the wheels of the respective rocking frames and having earth engaging blocks connected therewith.

-In testimony whereof I aflix my signature.

REGINALD J. DESMARAIS. 

